U.S. patent number 11,129,789 [Application Number 16/169,286] was granted by the patent office on 2021-09-28 for stabilized cosmetic compositions.
This patent grant is currently assigned to L'OREAL. The grantee listed for this patent is L'OREAL. Invention is credited to David Chan, Jonathan James Faig.
United States Patent |
11,129,789 |
Faig , et al. |
September 28, 2021 |
Stabilized cosmetic compositions
Abstract
A cosmetic composition includes a non-acid-resistant-grade
ultramarine dye, a stabilizing agent, at least one additive, and
water. The ultramarine dye may be present at a concentration of
about 0.1% to about 0.4%, by weight, of the cosmetic composition
and may include a trisulfur radical anion. The stabilizing agent
may include baicalin and may be at a concentration of about 0.2% or
less, by weight, of the cosmetic composition. The cosmetic
composition may have a pH in the range of 6.5 to 8.0. A method of
stabilizing a cosmetic composition includes forming a cosmetic
composition including a non-acid-resistant-grade ultramarine dye, a
stabilizing agent, at least one additive, and water. The method
also includes adjusting a pH of the cosmetic composition to a
predetermined value. The stabilizing agent inhibits degradation of
the ultramarine dye, thereby stabilizing the cosmetic composition
and inhibiting generation of an odor caused by degradation of the
ultramarine dye.
Inventors: |
Faig; Jonathan James
(Sayreville, NJ), Chan; David (Edison, NJ) |
Applicant: |
Name |
City |
State |
Country |
Type |
L'OREAL |
Paris |
N/A |
FR |
|
|
Assignee: |
L'OREAL (Paris,
FR)
|
Family
ID: |
70327574 |
Appl.
No.: |
16/169,286 |
Filed: |
October 24, 2018 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20200129417 A1 |
Apr 30, 2020 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K
8/9789 (20170801); A61Q 19/00 (20130101); A61K
8/26 (20130101); A61Q 17/04 (20130101); A61K
8/602 (20130101); A61K 2800/52 (20130101); A61K
2800/432 (20130101); A61K 2800/522 (20130101) |
Current International
Class: |
A61K
8/60 (20060101); A61Q 17/04 (20060101); A61K
8/9789 (20170101); A61Q 19/00 (20060101); A61K
8/26 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
Chemical Book, Pigment Blue 29 data sheet, obtained online Jan. 12,
2021. cited by examiner.
|
Primary Examiner: Haghighatian; Mina
Attorney, Agent or Firm: McNees Wallace & Nurick LLC
Claims
What is claimed is:
1. A cosmetic composition, comprising: a non-acid-resistant-grade
ultramarine dye that includes a trisulfur radical anion, the
non-acid-resistant-grade ultramarine dye being unstable over a pH
range from 6.0 to 7.5 such that the non-acid-resistant-grade
ultramarine dye releases a sulfur odor upon degeneration of the
trisulfur radial anion over the pH range; a stabilizing agent
comprising at least one antioxidant, the at least one antioxidant
comprising baicalin; at least one additive; and water, wherein the
baicalin stabilizes the non-acid-resistant-grade ultramarine dye
over the pH range such that, in the cosmetic composition, the
non-acid-resistant-grade ultramarine dye releases reduced sulfur
odor from degeneration of the trisulfur radial anion over the pH
range relative to an otherwise identical cosmetic composition
lacking the stabilizing agent.
2. The cosmetic composition of claim 1, wherein the at least one
additive further comprises an antioxidant that is not baicalin.
3. The cosmetic composition of claim 1, wherein the stabilizing
agent comprises Scutellaria Baicalensis root extract, the
Scutellaria Baicalensis root extract comprising the baicalin of the
at least one antioxidant.
4. The cosmetic composition of claim 3, wherein the Scutellaria
Baicalensis root extract is present at a concentration of about
0.2% or less, by weight, of the cosmetic composition.
5. The cosmetic composition of claim 3, wherein the baicalin
constitutes, by weight, at least 95% of the Scutellaria Baicalensis
root extract.
6. The cosmetic composition of claim 1, wherein the
non-acid-resistant-grade ultramarine dye is present at a
concentration of about 0.1% to about 0.4%, by weight, of the
cosmetic composition.
7. The cosmetic composition of claim 1, wherein the cosmetic
composition has a pH in the range of 6.5 to 8.0.
8. The cosmetic composition of claim 1, wherein the cosmetic
composition is free of the sulfur odor from degeneration of the
trisulfur radial anion over the pH range.
9. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one active that is selected from the
group consisting of phenylethyl resorcinol, hydroxyethyl urea,
sodium hydroxide, disodium ethylenediaminetetraacetic acid,
caffeine, hydroxyethylpiperazine ethane sulfonic acid, dipotassium
phosphate, potassium phosphate, capryloyl salicylic acid, and
sodium hyaluronate.
10. The cosmetic composition of claim 1, wherein the at least one
additive comprises violet 2.
11. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one fatty compound selected from the
group consisting of octyldodecanol and Cocos Nucifera oil.
12. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one polymer selected from the group
consisting of methyl methacrylate crosspolymer, ammonium
polyacryloyldimethyl taurate, and xanthan gum.
13. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one pearl pigment selected from the
group consisting of mica and synthetic fluorphlogopite.
14. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one preservative selected from the
group consisting of chlorphenesin and phenoxyethanol.
15. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one solvent selected from the group
consisting of caprylyl glycol, glycerin, and C12-15 alkyl
benzoate.
16. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one sun filter selected from the group
consisting of homosalate, ethylhexyl salicylate, octocrylene, and
butyl methoxydibenzoylmethane.
17. The cosmetic composition of claim 1, wherein the at least one
additive comprises at least one surfactant selected from the group
consisting of glyceryl stearate, myristic acid, palmitic acid,
stearic acid, PEG-100 stearate, and steareth-100.
18. The cosmetic composition of claim 1, wherein the cosmetic
composition is a moisturizer.
19. A cosmetic composition comprising: a non-acid-resistant-grade
ultramarine dye at a concentration of about 0.1% to about 0.4%, by
weight of the cosmetic composition, the non-acid-resistant-grade
ultramarine dye including a trisulfur radical anion, the
non-acid-resistant-grade ultramarine dye being unstable over a pH
range from 6.0 to 7.5 such that the non-acid-resistant-grade
ultramarine dye releases a sulfur odor upon degeneration of the
trisulfur radial anion over the pH range; a stabilizing agent
comprising baicalin at a concentration of about 0.2% or less, by
weight of the cosmetic composition; at least one additive; and
water, wherein the baicalin stabilizes the non-acid-resistant-grade
ultramarine dye over the pH range such that, in the cosmetic
composition, the non-acid-resistant-grade ultramarine dye releases
reduced sulfur odor from degeneration of the trisulfur radial anion
over the pH range relative to an otherwise identical cosmetic
composition lacking the stabilizing agent.
20. The cosmetic composition of claim 19, wherein the cosmetic
composition is free of the sulfur odor from degeneration of the
trisulfur radial anion over the pH range.
21. A method of stabilizing a cosmetic composition, the method
comprising: forming a cosmetic composition comprising: a
non-acid-resistant-grade ultramarine dye that includes a trisulfur
radical anion, the non-acid-resistant-grade ultramarine dye being
unstable over a pH range from 6.0 to 7.5 such that the
non-acid-resistant-grade ultramarine dye releases a sulfur odor
upon degeneration of the trisulfur radial anion over the pH range;
a stabilizing agent comprising at least one antioxidant, the at
least one antioxidant comprising baicalin; at least one additive;
and water; and adjusting a pH of the cosmetic composition to a
predetermined value within the pH range; wherein the baicalin
stabilizes the non-acid-resistant-grade ultramarine dye over the pH
range such that, in the cosmetic composition, the
non-acid-resistant-grade ultramarine dye releases reduced sulfur
odor from degeneration of the trisulfur radial anion over the pH
range relative to an otherwise identical cosmetic composition
lacking the stabilizing agent.
Description
FIELD OF THE INVENTION
The invention relates to cosmetic compositions with improved
stability against degradation. More specifically, the invention
relates to cosmetic compositions including a
non-acid-resistant-grade ultramarine and a stabilizing agent.
BACKGROUND OF THE INVENTION
Topical formulations, such as, for example, cosmetic compositions,
for keratinous substrates, such as, for example, skin or hair, may
include pigments as ingredients. Pigments may be used to provide
color, luster, sparkle, or other properties to the topical
formulations. Certain pigments may be unstable under certain
conditions, such as, for example, a particular pH condition or a
particular temperature condition, in such topical formulations,
with the degradation of the pigment having a negative effect on the
topical formulation, such as, for example, changing the color of
the topical formulation or causing the topical formulation to have
an objectionable odor.
There is a need for a formulation that overcomes one or more of the
aforementioned drawbacks associated with products that employ one
or more unstable pigments in the composition by improving the
stability of the unstable pigment in the composition. Such a
formulation would provide a product that retains its original
characteristics over a longer period of time.
BRIEF SUMMARY OF THE INVENTION
The summary is provided to introduce a selection of concepts in a
simplified form that are further described below in the detailed
description of the invention. This summary is not intended to
identify key features of the claimed subject matter, nor is it
intended to be used as an aid in determining the scope of the
claimed subject matter.
The compositions hereof are characterized, in various embodiments,
as including a non-acid-resistant-grade ultramarine dye, a
stabilizing agent, at least one additive, and water.
In some embodiments, the non-acid-resistant-grade ultramarine dye
is at a concentration of about 0.1% to about 0.4%, by weight, of
the cosmetic composition.
In some embodiments, the non-acid-resistant-grade ultramarine dye
includes a trisulfur radical anion.
In some embodiments, the stabilizing agent includes baicalin at a
concentration of about 0.2% or less, by weight, of the cosmetic
composition.
In some embodiments, the cosmetic composition has a pH in the range
of 6.5 to 8.0.
In some embodiments, the stabilizing agent stabilizes the
non-acid-resistant-grade ultramarine dye against degradation.
The methods hereof are characterized, in various embodiments, as
including forming a cosmetic composition and adjusting a pH of the
cosmetic composition to a predetermined value. The formed cosmetic
composition includes a non-acid-resistant-grade ultramarine dye, a
stabilizing agent, at least one additive, and water. The
stabilizing agent inhibits degradation of the
non-acid-resistant-grade ultramarine dye, thereby stabilizing the
cosmetic composition and inhibiting generation of an odor caused by
degradation of the non-acid-resistant-grade ultramarine dye.
Other features and advantages of the present invention will be
apparent from the following more detailed description, by way of
example, the principles of the invention.
This disclosure describes exemplary embodiments in accordance with
the general inventive concepts and is not intended to limit the
scope of the invention in any way. Indeed, the invention as
described in the specification is broader than and unlimited by the
exemplary embodiments set forth herein, and the terms used herein
have their full ordinary meaning.
DETAILED DESCRIPTION OF THE INVENTION
According to the disclosure, a cosmetic composition is provided
that includes a stabilizing agent and a non-acid-resistant-grade
ultramarine dye stabilized by the stabilizing agent.
The stabilizing agent provides the surprising and unexpected
benefit of reducing or eliminating an undesirable odor that may be
associated with the cosmetic composition in a pH range of about 6.5
to about 8. In exemplary embodiments, the benefit results from a
reduction or elimination of the rate or amount of degradation of
the non-acid-resistant-grade ultramarine dye based on the presence
of the stabilizing agent and relative to the same or substantially
similar composition conditions in the absence of the stabilizing
agent.
The cosmetic composition may be any water-based cosmetic
composition with a measurable pH. Appropriate types of cosmetic
composition may include, but are not limited to, moisturizers,
sunscreens, water-based makeup products, hair dyes, shampoos, and
conditioners.
Non-Acid-Resistant-Grade Ultramarine Dyes
In accordance with the disclosure, provided are cosmetic
compositions that include at least one non-acid-resistant-grade
ultramarine dye. In some embodiments, the non-acid-resistant-grade
ultramarine dye serves as a pigment to affect the color of the
cosmetic composition. In some embodiments, the ultramarine dye
provides color correction to the cosmetic composition. In
accordance with the various embodiments, the
non-acid-resistant-grade ultramarine dye is a
commercially-available composition. In exemplary embodiments, the
non-acid-resistant-grade ultramarine dye is an unstable pigment in
an aqueous environment at a predetermined pH of the composition in
the absence of a stabilizing agent. In exemplary embodiments, the
non-acid-resistant-grade ultramarine dye includes a trisulfur
radical anion. In exemplary embodiments, the
non-acid-resistant-grade ultramarine dye generates a sulfur odor
upon degradation of the trisulfur radical anion.
More particularly, the non-acid-resistant-grade ultramarine dye is
present in the composition at a concentration, by weight, based on
the total weight of the composition, of about 0.4% or less,
alternatively from about 0.1% to about 0.4%, alternatively from
about 0.1% to about 0.3%, alternatively from about 0.15% to about
0.25%, alternatively about 0.1%, alternatively about 0.2%,
alternatively about 0.3%, alternatively about 0.4%, or any suitable
value, range, or sub-range thereof, by weight, based on the weight
of the composition.
Stabilizing Agents
In accordance with the disclosure, provided are cosmetic
compositions that further include at least one stabilizing agent.
The stabilizing agent inhibits or prevents degradation of the
non-acid-resistant-grade ultramarine dye in an aqueous environment
at a predetermined pH of the composition, thereby inhibiting or
preventing an odor generation upon degradation of the
non-acid-resistant-grade ultramarine dye. In some embodiments, the
stabilizing agent includes at least one antioxidant.
In some embodiments, the at least one antioxidant includes a
flavone glycoside, a hydrophilic-modified flavonol, an
isoflavonoid, or combinations thereof. Appropriate flavone
glycosides may include, but are not limited to, baicalin,
quercetin, kaempferol, and isorhamnetin. In exemplary embodiments,
the flavone glycoside includes baicalin. In exemplary embodiments,
the stabilizing agent is provided in a Scutellaria Baicalensis root
extract. In exemplary embodiments, the Scutellaria Baicalensis root
extract is at least 95% baicalin, by weight. The stabilizing agent
is preferably provided in an amount sufficient to inhibit or
prevent degradation of the non-acid-resistant-grade ultramarine dye
in an aqueous environment at a predetermined pH of the
composition.
More particularly, the stabilizing agent is present in the
composition at a concentration, by weight, based on the total
weight of the composition, of about 0.4% or less, alternatively
from about 0.1% to about 0.4%, alternatively from about 0.1% to
about 0.3%, alternatively from about 0.15% to about 0.25%,
alternatively about 0.1%, alternatively about 0.2%, alternatively
about 0.3%, alternatively about 0.4%, or any suitable value, range,
or sub-range thereof, by weight, based on the weight of the
composition.
Additives
In accordance with the disclosure, the composition further includes
at least one additive. The at least one additive may be selected to
provide a cosmetic composition of a predetermined type having at
least one predetermined property. The total amount of the at least
one additive may be any appropriate amount, such as, for example,
about 50% or less, alternatively from about 40% to about 50%,
alternatively from about 30% to about 50%, alternatively about 60%
or less, alternatively from about 40% to about 60%, or any suitable
value, range, or sub-range thereof, by weight, based on the weight
of the composition.
The at least one additive may include, but is not limited to, at
least one polymer, at least one non-ultramarine cosmetic colorant,
at least one active, at least one preservative, at least one
non-water solvent, at least one sun filter, at least one pearl
pigment, at least one surfactant, at least one fatty compound, at
least one vitamin, at least one adjuvant, or combinations
thereof.
The cosmetic composition may include any number of appropriate
polymers as additives. Appropriate polymers for the cosmetic
composition may include, but are not limited to, methyl
methacrylate crosspolymer, ammonium polyacryloyldimethyl taurate,
xanthan gum, or combinations thereof. The total amount of the
polymers may be any appropriate amount, such as, for example, about
5% or less, alternatively from about 2.5% to about 5%, by weight,
based on the weight of the composition.
The cosmetic composition may include any number of appropriate
non-ultramarine cosmetic colorants approved for use in food, drug,
and cosmetics by the Food and Drug Administration (FDA) as
additives. Appropriate non-ultramarine cosmetic colorants for the
cosmetic composition may include, but are not limited to, blue 1,
blue 2, green 3, red 3, red 40, yellow 5, yellow 6, citrus red 2,
orange B, violet 2, or combinations thereof. The total amount of
the non-ultramarine dyes may be any appropriate amount, such as,
for example, about 0.1% or less, alternatively from about 0.05% to
about 0.1%, by weight, based on the weight of the composition.
The cosmetic composition may include any number of appropriate
actives as additives. Appropriate actives for the cosmetic
composition may include, but are not limited to, phenylethyl
resorcinol, hydroxyethyl urea, caffeine, hydroxyethylpiperazine
ethane sulfonic acid, capryloyl salicylic acid, sodium hyaluronate,
retinol, ascorbyl tetraisopalmitate, ascorbyl glucoside, or
combinations thereof. The total amount of the actives may be any
appropriate amount, such as, for example, about 5% or less,
alternatively from about 2.5% to about 5%, by weight, based on the
weight of the composition.
The cosmetic composition may include any number of appropriate
preservatives as additives. Appropriate preservatives for the
cosmetic composition may include, but are not limited to,
chlorphenesin, phenoxyethanol, or combinations thereof. The total
amount of the preservatives may be any appropriate amount, such as,
for example, about 1% or less, alternatively from about 0.5% to
about 1%, by weight, based on the weight of the composition.
The cosmetic composition may include any number of appropriate
non-water solvents as additives. Appropriate non-water solvents for
the cosmetic composition may include, but are not limited to,
caprylyl glycol, glycerin, C12-15 alkyl benzoate, or combinations
thereof. The total amount of the non-water solvents may be any
appropriate amount, such as, for example, about 20% or less,
alternatively from about 10% to about 20%, by weight, based on the
weight of the composition.
The cosmetic composition may include any number of appropriate sun
filter as additives. Appropriate sun filters for the cosmetic
composition may include, but are not limited to, homosalate,
ethylhexyl salicylate, octocrylene, butyl methoxydibenzoylmethane,
or combinations thereof. The total amount of the sun filters may be
any appropriate amount, such as, for example, about 20% or less,
alternatively from about 10% to about 20%, by weight, based on the
weight of the composition.
The cosmetic composition may include any number of appropriate
pearl pigments as additives. Appropriate pearl pigments for the
cosmetic composition may include, but are not limited to, mica,
synthetic fluorphlogopite, titanium dioxide, tin dioxide, or
combinations thereof. The total amount of the pearl pigments may be
any appropriate amount, such as, for example, about 2% or less,
alternatively from about 1% to about 2%, by weight, based on the
weight of the composition.
The cosmetic composition may include any number of appropriate
surfactants as additives. Appropriate surfactants for the cosmetic
composition may include, but are not limited to, glyceryl stearate,
myristic acid, palmitic acid, stearic acid, PEG-100 stearate,
seareth-100, or combinations thereof. The total amount of the
surfactants may be any appropriate amount, such as, for example,
about 8% or less, alternatively from about 4% to about 8%, by
weight, based on the weight of the composition.
The cosmetic composition may include any number of appropriate
fatty compounds as additives. Appropriate fatty compounds for the
cosmetic composition may include, but are not limited to,
octyldodecanol, coconut oil, or combinations thereof. The total
amount of the fatty compounds may be any appropriate amount, such
as, for example, about 6% or less, alternatively from about 3% to
about 6%, by weight, based on the weight of the composition.
The cosmetic composition may include any number of appropriate
vitamins as additives. Appropriate vitamins for the cosmetic
composition may include, but are not limited to, niacinamide. The
total amount of the vitamins may be any appropriate amount, such
as, for example, about 1% or less, alternatively from about 0.5% to
about 1%, by weight, based on the weight of the composition.
The cosmetic composition may include any number of other
appropriate additives or adjuvants. Representative additives and
adjuvants include, for example, water-soluble or water-miscible
solvents or co-solvents, dispersion enhancing agents, moisturizers,
colorants, fillers, antioxidants (e.g., ethylenediaminetetraacetic
acid (EDTA), butylated hydroxytoluene (BHT), and tocopherol),
essential oils, fragrances, dyes, neutralizing or pH-adjusting
agents (e.g., citric acid, triethylamine (TEA), and sodium
hydroxide), conditioning or softening agents (e.g., panthenol and
allantoinin) and extracts, such as botanical extracts. Additives
and adjuvants may be present in the compositions in amounts
generally ranging from about 0.01% to about 10% by weight. Examples
of cosmetic active agents or dermatological active agents include
sunscreen agents (e.g., inorganic sunscreen agent, such as titanium
dioxide and zinc oxide and organic sunscreen agents, such as
octocrylene, ethylhexyl methoxycinnamate, and avobenzone),
free-radical scavengers, keratolytic agents, vitamins (e.g.,
Vitamin E and derivatives thereof), anti-elastase and
anti-collagenase agents, peptides, fatty acid derivatives,
steroids, trace elements, extracts of algae and of planktons,
enzymes and coenzymes, flavonoids and ceramides, hydroxy acids and
mixtures thereof, and enhancing agents.
Water
In accordance with the disclosure, the composition is a water-based
composition having a measurable pH.
In accordance with the various embodiments, water is present in the
composition at a concentration, by weight, based on the total
weight of the composition, of about 40% or greater, alternatively
about 70% or less, alternatively from about 40% to about 70%,
alternatively from about 40% to about 60%, alternatively from about
45% to about 60%, alternatively from about 45% to about 55%,
alternatively from about 45% to about 50%, alternatively from about
50% to about 60%, alternatively from about 50% to about 55%,
alternatively from about 55% to about 60%, alternatively about 50%,
51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, or any suitable
value, range, or sub-range thereof, by weight, based on the weight
of the composition.
Raw Materials
Compositions as described in the representative embodiments
according to the disclosure, and compositions as exemplified herein
include raw materials selected from commercially available
materials.
EXAMPLES
The invention is further described in the context of the following
examples, which are presented by way of illustration, not of
limitation. The inventive compositions may be used, for example, as
a commercial daily sun protection factor (SPF) product or as a base
composition for such a commercial cosmetic product.
Compositions
Two comparative compositions were formed that included a
non-acid-resistant-grade ultramarine dye ("ultramarines") but
lacked a stabilizing compound. TABLE 1 lists the ingredients and
their amounts in weight percentage in Comparative Example 1 and
Comparative Example 2.
TABLE-US-00001 TABLE 1 Comparative Compositions COM- COM- PARATIVE
PARATIVE PHASE INGREDIENT 1 2 A C12-15 ALKYL BENZOATE 4 4 A
CAPRYLOYL SALICYLIC 0.15 0.15 ACID A COCOS NUCIFERA 2 2 (COCONUT)
OIL A GLYCERYL STEARATE 1.5 1.5 A MYRISTIC ACID 0.045 0.045 A
NIACINAMIDE 0.92 0.92 A SUN FILTERS 15 15 A OCTYLDODECANOL 2 2 A
PALMITIC ACID 0.66 0.66 A PEG-100 STEARATE 1.5 1.5 A STEARETH-100
0.4 0.4 A STEARIC ACID 0.795 0.795 A VIOLET 2 0.0025 0.0025 B
CAPRYLYL GLYCOL 0.3 0.3 B CHLORPHENESIN 0.1 0.1 B GLYCERIN 10 10 B
PHENOXYETHANOL 0.7 0.7 B ACTIVES 3.773 3.773 C WATER 51.5025
51.5025 D AMMONIUM 1 1 POLYACRYLOYLDIMETHYL TAURATE D XANTHAN GUM
0.25 0.25 E METHYL METHACRYLATE 2 2 CROSSPOLYMER E MICA 0.4472
0.4472 E SYNTHETIC 0.17 0.17 FLUORPHLOGOPITE E TIN OXIDE 0.0025
0.0025 E TITANIUM DIOXIDE 0.4903 0.4903 F ISOPROPYL TITANIUM 0.006
TRIISOSTEARATE F SILICA 0.0376 F TRIETHOXYSILYLETHYL 0.006 POLY-
DIMETHYLSILOXYETHYL DIMETHICONE F ULTRAMARINES 0.1504 0.2 G SODIUM
HYDROXIDE 0.092 0.092
Two inventive compositions were formed that included a
non-acid-resistant-grade ultramarine dye ("ultramarines") and a
stabilizing compound ("Scutellaria Baicalensis root extract").
TABLE 2 lists the ingredients and their amounts in weight
percentage in Inventive Example 1 and Inventive Example 2. The
compositions of Inventive Examples 1 and 2 are substantially
identical to the compositions of Comparative Examples 1 and 2,
except for the addition of the stabilizing agent.
TABLE-US-00002 TABLE 2 Inventive Compositions INVEN- INVEN- PHASE
INGREDIENT TIVE 1 TIVE 2 A C12-15 ALKYL BENZOATE 4 4 A CAPRYLOYL
SALICYLIC ACID 0.15 0.15 A COCOS NUCIFERA 2 2 (COCONUT) OIL A
GLYCERYL STEARATE 1.5 1.5 A MYRISTIC ACID 0.045 0.045 A NIACINAMIDE
0.92 0.92 A SUN FILTERS 15 15 A OCTYLDODECANOL 2 2 A PALMITIC ACID
0.66 0.66 A PEG-100 STEARATE 1.5 1.5 A STEARETH-100 0.4 0.4 A
STEARIC ACID 0.795 0.795 A VIOLET 2 0.0025 0.0025 B CAPRYLYL GLYCOL
0.3 0.3 B CHLORPHENESIN 0.1 0.1 B GLYCERIN 10 10 B PHENOXYETHANOL
0.7 0.7 B SCUTELLARIA 0.2 0.2 BAICALENSIS ROOT EXTRACT B ACTIVES
3.773 3.773 C WATER 51.3025 51.3025 D AMMONIUM 1 1
POLYACRYLOYLDIMETHYL TAURATE D XANTHAN GUM 0.25 0.25 E METHYL
METHACRYLATE 2 2 CROSSPOLYMER E MICA 0.4472 0.4472 E SYNTHETIC
FLUORPHLOGOPITE 0.17 0.17 E TIN OXIDE 0.0025 0.0025 E TITANIUM
DIOXIDE 0.4903 0.4903 F ISOPROPYL TITANIUM 0.006 TRIISOSTEARATE F
SILICA 0.0376 F TRIETHOXYSILYLETHYL 0.006 POLYDIMETHYLSILOXYETHYL
DIMETHICONE F ULTRAMARINES 0.1504 0.2 G SODIUM HYDROXIDE 0.092
0.092
Methods of Preparation
The ingredients of phase A were combined and heated to about
75.degree. C. (about 167.degree. F.) in a primary vessel and mixed
until dissolved. The ingredients of phase B were combined and
heated to about 75.degree. C. (about 167.degree. F.) and mixed in a
secondary vessel until dissolved. The contents of the secondary
vessel were added slowly to the primary vessel and swept and
homogenized for about 15 minutes. The ingredient (water) of phase C
was then added to the primary vessel and swept and homogenized for
about 15 minutes. The primary vessel was then removed from the heat
source to permit cooling to room temperature. The ingredients of
phase D were then added to the primary vessel and swept and
homogenized for about 10 minutes. Once the primary vessel cooled
below about 40.degree. C. (about 104.degree. F.), phases E, F, and
G were added sequentially with mixing for about 5 minutes before
adding the next phase each time. After the addition of sodium
hydroxide (phase G), the pH of each example formulation was tested
and adjusted, if needed, to 5.8 with additional sodium
hydroxide.
Testing Results
The pH of each example formulation was maintained at about 5.8 for
about 5 to 10 minutes to ensure mixing and homogenization of the
ultramarines before portions of each example composition were
adjusted to a pH of 6.5, 7.0, 7.5 and 8.0 by addition of more
sodium hydroxide. The pH range of 6.5 to 8.0 covers the range of pH
values typically found in commercial water-based cosmetic
compositions having a measurable pH. After the target pH values of
6.5, 7.0, 7.5 and 8.0 were reached, each sample was maintained at
room temperature and was then checked after 12 to 18 hours for the
development of a sulfur odor. TABLE 3 shows the result of the
fragrance evaluations.
TABLE-US-00003 TABLE 3 Fragrance Evaluation pH Comparative 1
Comparative 2 Inventive 1 Inventive 2 6.5 N/D High sulfur N/D No
sulfur 7.0 High sulfur Moderate sulfur Minimal sulfur No sulfur 7.5
High sulfur Minimal sulfur No sulfur No sulfur 8.0 No sulfur No
sulfur No sulfur No sulfur
Comparative Example 1 had a high sulfur odor at pH values of 7.0
and 7.5, but Comparative Example 1 had no detected sulfur odor at a
pH of 8.0. In comparison, Inventive Example 1 had a minimal sulfur
odor at a pH of 7.0 and no sulfur odor at pH values of 7.5 and 8.0.
Thus, the stabilizing agent significantly reduced the odor of the
composition at a pH of 7.0 and substantially eliminated the odor of
the composition at a pH of 7.5.
Comparative Example 2 had a high sulfur odor at a pH value of 6.5,
a moderate sulfur odor at a pH value of 7.0, a minimal sulfur odor
at a pH of 7.5, and no detected sulfur odor at a pH of 8.0. In
comparison, Inventive Example 2 had no sulfur odor at pH values of
6.5, 7.0, 7.5, and 8.0. Thus, the stabilizing agent substantially
eliminated the odor of the composition at pH values of 6.5, 7.0,
and 7.5.
The articles "a" and "an," as used herein, mean one or more when
applied to any feature in embodiments of the present invention
described in the specification and claims. The use of "a" and "an"
does not limit the meaning to a single feature unless such a limit
is specifically stated. The article "the" preceding singular or
plural nouns or noun phrases denotes a particular specified feature
or particular specified features and may have a singular or plural
connotation depending upon the context in which it is used. The
adjective "any" means one, some, or all indiscriminately of
whatever quantity.
"One or more," as used herein, means at least one, and thus
includes individual components as well as
mixtures/combinations.
The transitional terms "comprising", "consisting essentially of"
and "consisting of", when used in the appended claims, in original
and amended form, define the claim scope with respect to what
unrecited additional claim elements or steps, if any, are excluded
from the scope of the claim(s). The term "comprising" is intended
to be inclusive or open-ended and does not exclude any additional,
unrecited element, method, step or material. The term "consisting
of" excludes any element, step or material other than those
specified in the claim and, in the latter instance, impurities
ordinarily associated with the specified material(s). The term
"consisting essentially of" limits the scope of a claim to the
specified elements, steps or material(s) and those that do not
materially affect the basic and novel characteristic(s) of the
claimed invention. All materials and methods described herein that
embody the present invention can, in alternate embodiments, be more
specifically defined by any of the transitional terms "comprising,"
"consisting essentially of," and "consisting of."
Other than in the operating examples, or where otherwise indicated,
all numbers expressing quantities of ingredients and/or reaction
conditions are to be understood as being modified in all instances
by the term "about," meaning within 10% of the indicated number
(e.g. "about 10%" means 9%-11% and "about 2%" means 1.8%-2.2%).
All percentages and ratios are calculated by weight unless
otherwise indicated. All percentages are calculated based on the
total composition unless otherwise indicated. Generally, unless
otherwise expressly stated herein, "weight" or "amount" as used
herein with respect to the percent amount of an ingredient refers
to the amount of the raw material comprising the ingredient,
wherein the raw material may be described herein to comprise less
than and up to 100% activity of the ingredient. Therefore, weight
percent of an active in a composition is represented as the amount
of raw material containing the active that is used, and may or may
not reflect the final percentage of the active, wherein the final
percentage of the active is dependent on the weight percent of
active in the raw material.
All ranges and amounts given herein are intended to include
subranges and amounts using any disclosed point as an end point.
Thus, a range of "1% to 10%, such as 2% to 8%, such as 3% to 5%,"
is intended to encompass ranges of "1% to 8%," "1% to 5%," "2% to
10%," and so on. All numbers, amounts, ranges, etc., are intended
to be modified by the term "about," whether or not so expressly
stated. Similarly, a range given of "about 1% to 10%" is intended
to have the term "about" modifying both the 1% and the 10%
endpoints. Further, it is understood that when an amount of a
component is given, it is intended to signify the amount of the
active material unless otherwise specifically stated.
Notwithstanding that the numerical ranges and parameters setting
forth the broad scope of the disclosure are approximations, unless
otherwise indicated the numerical values set forth in the specific
examples are reported as precisely as possible. Any numerical
value, however, inherently contains certain errors necessarily
resulting from the standard deviation found in their respective
testing measurements. The example that follows serves to illustrate
embodiments of the present disclosure without, however, being
limiting in nature.
While the invention has been described with reference to a
preferred embodiment, it will be understood by those skilled in the
art that various changes may be made, and equivalents may be
substituted for elements thereof without departing from the scope
of the invention. In addition, many modifications may be made to
adapt a particular situation or material to the teachings of the
invention without departing from the essential scope thereof.
Therefore, it is intended that the invention not be limited to the
particular embodiment disclosed as the best mode contemplated for
carrying out this invention, but that the invention will include
all embodiments falling within the scope of the appended
claims.
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